A process for the preparation of a syndiotactic polyolefin

Details A process for the preparation of a syndiotactic polyolefin A process for the preparation of a syndiotactic polyolefin

C - Chemistry, Metallurgy

08

F

402/626

C08F 4/06 (2006.01) C08F 10/00 (2006.01) C08F 110/06 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01)

Patent

CA 2011879

- 1 - HOE 89/F 083 Abstract of the disclosure A process for the preparation of a syndiotactic polyolefin A syndiotactic polyolefin is obtained in a high yield by polymerization or copolymerization of an olefin of the formula R"-CH=CH-R4 in the presence of a catalyst consisting of a metallocene of the formula I Image (I) in which M1 is titanium, zirconium, vanadium, niobium or tantalum, and an aluminoxane. This polyolefin has a very high molecular weight, a very narrow molecular weight distribution and a very high syndiotactic index. Shaped articles produced from the polymer are distinguished by a high transparency, flexibility, tear resistance and an excellent surface gloss.

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